If the kernel fails to allocate resources for the initial value of a BAR

for a PCI device during the boot-time probe of the parent PCI bus, then
zero the BAR and clear the resource list entry for that BAR.  This forces
the PCI bus driver to request a valid resource range from the parent bridge
driver when the device driver tries to allocate the BAR.  Similarly, if the
initial value of a BAR is a valid range but it is > 4GB and the current OS
only has 32-bit longs, then do a full teardown of the initial value of the
BAR to force a reallocation.

Reviewed by:	imp
MFC after:	1 week

0 files changed, 0 insertions, 0 deletions